The Mean of the Sample Means and the Pooled Standard

question 118

True/False

The mean of the sample means and the pooled standard deviation of 36 samples of size 9 taken from a production process under control are ,and S = 6,respectively.The lower control limit of the 3-sigma chart is 147.

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Definitions:

Sporangia

Structures in fungi, algae, and some plants that produce and contain spores for reproduction.

Homosporous

A term referring to plants that produce only one type of spore, typically leading to the development of a single type of gametophyte.

Microspores

Small spores produced by seed plants and some ferns during the process of meiosis, which develop into male gametophytes.

Megaspores

Large spores produced by some plants that develop into female gametophytes, part of the reproductive cycle.